[Flow] Arguments not transmitted at submit on searchform

[Andre Hohmann]

Good morning,

in my typo3 flow App a have a search form with a validation (for example at a field where the user can put in a date to search for). If a user puts in a wrong value, the validation works and the user is getting back to the originating function with hints as flashmessages about what he fills in wrong, but the fields he had filled in now are empty! 

I looked with the firefox-extension "Live HTTP headers" if the arguments are transmitted after click on submit in the csrf-tokken like in other forms in my app, but they are not. So I think it cannot correlate with the cache.

Does anybody have an idea? I spent many hours and a lot of googleing to get it work till now, but i don't really have a hint whats wrong.
Thank you very much.